Rubidium

Lanthanum

Atomic Structure of Rubidium and Lanthanum

Rubidium

Lanthanum

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Atomic

Atomic Number

3757

3 117

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Electron Configuration

[Kr] 5s¹

[Xe] 5d² 6s²

Crystal Structure

Body Centered Cubic (BCC)

Double Hexagonal Close Packed (DHCP)

Crystal Lattice

Atom

Number of Protons

3757

3 117

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Number of Neutrons

4882

4 285

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Number of Electrons

3757

3 117

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Radius of an Atom

Atomic Radius

248.00 pm187.00 pm

0 348

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Covalent Radius

220.00 pm207.00 pm

0 260

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Van der Waals Radius

303.00 pm240.00 pm

0 348

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Atomic Weight

85.47 amu138.91 amu

6.94 294

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Atomic Volume

55.90 cm3/mol20.73 cm3/mol

1.39 71.07

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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

9.47 (-eV)40.71 (-eV)

0 392.42

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Lattice Constant

558.50 pm377.20 pm

0 891.25

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Lattice Angles

π/2, π/2, π/2

π/2, π/2, 2 π/3

Lattice C/A Ratio

1.591.62

0.423 1.9

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